f150Dylan

Hey, I'm Dylan new on here I have a 2006 f150 4x4 lariat with a k&n cai, true duals super 40s and a custom tune from php. I dont know if it is because I'm 4 wheel drive or i lost my tourqe from the dual exhaust. I was wondering if somebody could help me out with the problem with a mod suggestion or a suggestion on how I can have my exhaust re done to get some nuts back at take off. Thank you.